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Old 03-13-2010, 08:31 AM   #6 (permalink)
CapriRacer
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Quote:
Originally Posted by cfg83 View Post
A Word of Caution:

Unfortunately, that calculator makes the same mistake almost all of them make - they don't consider that the rolling diameter of a tire is about 97% of the measured diameter. That means the speeds calculated are going to be off 3%.

However, since this error also occurs when a comparison between 2 different tires is done, the resulting error is small enough to ignore.

So BE CAREFUL how you use this information.
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